oj.uz

Submission #234304

# Submission time Handle Problem Language Result Execution time Memory
234304 2020-05-24T00:05:25 Z xiaowuc1 Long Mansion (JOI17_long_mansion) C++14
100 / 100
 740 ms 36476 KB 
#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <cstring>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <vector>

using namespace std;

// BEGIN NO SAD
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(a, x) for(auto& a : x)
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
typedef vector<int> vi;
// END NO SAD

typedef long long ll;
typedef pair<int, int> pii;
typedef vector<vector<ll>> matrix;

typedef pair<ll, ll> pll;

const int KOOSAGA_SZ = 1 << 19;
pii koosagatree[2 * KOOSAGA_SZ];
int connect[KOOSAGA_SZ];
vector<int> keystorooms[KOOSAGA_SZ];
bool hasinrange(int key, int lhs, int rhs) {
  auto it = lower_bound(all(keystorooms[key]), lhs);
  return it != keystorooms[key].end() && *it <= rhs;
}
int n;
pii merge(pii a, pii b) {
  return pii(min(a.first,b.first), max(a.second,b.second));
}
void upd(int idx, pii v) {
  idx += KOOSAGA_SZ;
  koosagatree[idx] = merge(koosagatree[idx], v);
  while(idx > 1) {
    idx /= 2;
    koosagatree[idx] = merge(koosagatree[2*idx], koosagatree[2*idx+1]);
  }
}
pii qry(int lhs, int rhs) {
  pii ret = {1e9, 0};
  lhs += KOOSAGA_SZ;
  rhs += KOOSAGA_SZ;
  while(lhs <= rhs) {
    if(lhs == rhs) return merge(ret, koosagatree[lhs]);
    if(lhs%2) ret = merge(ret, koosagatree[lhs++]);
    if(rhs%2==0) ret = merge(ret, koosagatree[rhs--]);
    lhs /= 2;
    rhs /= 2;
  }
  return ret;
}

void realprop() {
  for(int i = 1; i <= n; i++) {
    while(true) {
      pii val = qry(koosagatree[i+KOOSAGA_SZ].first, koosagatree[i+KOOSAGA_SZ].second);
      bool dirty = val != koosagatree[i + KOOSAGA_SZ];
      if(val.first > 1) {
        int need = connect[val.first-1];
        if(hasinrange(need, val.first, val.second)) {
          dirty = true;
          val.first--;
        }
      }
      if(val.second < n) {
        int need = connect[val.second];
        if(hasinrange(need, val.first, val.second)) {
          dirty = true;
          val.second++;
        }
      }
      if(!dirty) break;
      upd(i, val);
    }
  }
}
void prop() {
  for(int qq = 0; qq < 5; qq++) realprop();
}
void init() {
  for(int i = 0; i < KOOSAGA_SZ; i++) koosagatree[i+KOOSAGA_SZ] = {i, i};
  for(int i = KOOSAGA_SZ-1; i > 0; i--) {
    koosagatree[i] = merge(koosagatree[2*i], koosagatree[2*i+1]);
  }
}

void solve() {
  cin >> n;
  for(int i = 1; i < n; i++) cin >> connect[i];
  for(int i = 1; i <= n; i++) {
    int k;
    cin >> k;
    while(k--) {
      int key;
      cin >> key;
      keystorooms[key].push_back(i);
    }
  }
  init();
  prop();
  int q;
  cin >> q;
  while(q--) {
    int x, y;
    cin >> x >> y;
    pii ret = koosagatree[x + KOOSAGA_SZ];
    if(ret.first <= y && y <= ret.second) cout << "YES\n";
    else cout << "NO\n";
  }
}

// are there edge cases (N=1?)
// are array sizes proper (scaled by proper constant, for example 2* for koosaga tree)
// integer overflow?
// DS reset properly between test cases

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL); cout.tie(NULL);
  solve();
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 20992 KB Output is correct
2 Correct 21 ms 20992 KB Output is correct
3 Correct 23 ms 20992 KB Output is correct
4 Correct 20 ms 20968 KB Output is correct
5 Correct 20 ms 20992 KB Output is correct
6 Correct 21 ms 20992 KB Output is correct
7 Correct 19 ms 20992 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 20992 KB Output is correct
2 Correct 21 ms 20992 KB Output is correct
3 Correct 23 ms 20992 KB Output is correct
4 Correct 20 ms 20968 KB Output is correct
5 Correct 20 ms 20992 KB Output is correct
6 Correct 21 ms 20992 KB Output is correct
7 Correct 19 ms 20992 KB Output is correct
8 Correct 127 ms 22752 KB Output is correct
9 Correct 128 ms 22776 KB Output is correct
10 Correct 128 ms 22908 KB Output is correct
11 Correct 121 ms 23032 KB Output is correct
12 Correct 111 ms 23116 KB Output is correct
13 Correct 122 ms 23032 KB Output is correct
14 Correct 127 ms 23032 KB Output is correct
15 Correct 130 ms 23208 KB Output is correct
16 Correct 117 ms 23288 KB Output is correct
17 Correct 115 ms 23032 KB Output is correct
18 Correct 122 ms 23160 KB Output is correct
19 Correct 119 ms 23032 KB Output is correct
20 Correct 117 ms 23160 KB Output is correct
21 Correct 121 ms 23288 KB Output is correct
22 Correct 118 ms 23032 KB Output is correct
23 Correct 127 ms 23032 KB Output is correct
24 Correct 122 ms 22904 KB Output is correct
25 Correct 141 ms 22904 KB Output is correct
26 Correct 121 ms 22776 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 310 ms 25808 KB Output is correct
2 Correct 308 ms 25336 KB Output is correct
3 Correct 291 ms 25528 KB Output is correct
4 Correct 304 ms 25440 KB Output is correct
5 Correct 307 ms 25592 KB Output is correct
6 Correct 284 ms 24568 KB Output is correct
7 Correct 259 ms 24824 KB Output is correct
8 Correct 247 ms 24696 KB Output is correct
9 Correct 247 ms 24828 KB Output is correct
10 Correct 239 ms 24700 KB Output is correct
11 Correct 247 ms 24824 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 20992 KB Output is correct
2 Correct 21 ms 20992 KB Output is correct
3 Correct 23 ms 20992 KB Output is correct
4 Correct 20 ms 20968 KB Output is correct
5 Correct 20 ms 20992 KB Output is correct
6 Correct 21 ms 20992 KB Output is correct
7 Correct 19 ms 20992 KB Output is correct
8 Correct 127 ms 22752 KB Output is correct
9 Correct 128 ms 22776 KB Output is correct
10 Correct 128 ms 22908 KB Output is correct
11 Correct 121 ms 23032 KB Output is correct
12 Correct 111 ms 23116 KB Output is correct
13 Correct 122 ms 23032 KB Output is correct
14 Correct 127 ms 23032 KB Output is correct
15 Correct 130 ms 23208 KB Output is correct
16 Correct 117 ms 23288 KB Output is correct
17 Correct 115 ms 23032 KB Output is correct
18 Correct 122 ms 23160 KB Output is correct
19 Correct 119 ms 23032 KB Output is correct
20 Correct 117 ms 23160 KB Output is correct
21 Correct 121 ms 23288 KB Output is correct
22 Correct 118 ms 23032 KB Output is correct
23 Correct 127 ms 23032 KB Output is correct
24 Correct 122 ms 22904 KB Output is correct
25 Correct 141 ms 22904 KB Output is correct
26 Correct 121 ms 22776 KB Output is correct
27 Correct 310 ms 25808 KB Output is correct
28 Correct 308 ms 25336 KB Output is correct
29 Correct 291 ms 25528 KB Output is correct
30 Correct 304 ms 25440 KB Output is correct
31 Correct 307 ms 25592 KB Output is correct
32 Correct 284 ms 24568 KB Output is correct
33 Correct 259 ms 24824 KB Output is correct
34 Correct 247 ms 24696 KB Output is correct
35 Correct 247 ms 24828 KB Output is correct
36 Correct 239 ms 24700 KB Output is correct
37 Correct 247 ms 24824 KB Output is correct
38 Correct 432 ms 27360 KB Output is correct
39 Correct 491 ms 27644 KB Output is correct
40 Correct 393 ms 27128 KB Output is correct
41 Correct 740 ms 27232 KB Output is correct
42 Correct 285 ms 25084 KB Output is correct
43 Correct 277 ms 25004 KB Output is correct
44 Correct 409 ms 27368 KB Output is correct
45 Correct 429 ms 27384 KB Output is correct
46 Correct 403 ms 27640 KB Output is correct
47 Correct 281 ms 25080 KB Output is correct
48 Correct 276 ms 24824 KB Output is correct
49 Correct 434 ms 26856 KB Output is correct
50 Correct 471 ms 27100 KB Output is correct
51 Correct 473 ms 28024 KB Output is correct
52 Correct 276 ms 29584 KB Output is correct
53 Correct 343 ms 32756 KB Output is correct
54 Correct 356 ms 36476 KB Output is correct
55 Correct 337 ms 32912 KB Output is correct